BikeRay III high performance LED bike lights with 12 months guarantee O ring Mount System LED x 3 Cree XP-G Reflector mould optical glass lens High temperature protection driver board Power supply 4x 18650 battery, 100% waterproof design Aluminum alloy 6061 aircraft grade material Waterproof with CE Certification Run time High 4.25 hrs 1300 lumens Low 15-16 hrs 350 lumens Charging time: 4.25 hours ( standard charger) 3 step battery power warning - green 100~50%, blue 50~10%, red 10% Kit includes Handlebar & helmet mount Extension lead Battery with cover and mounting strap Mains battery charger with UK plug Carry